Crop Weed interactions

The EWRS Working Group "Crop-Weed Interactions" focuses on the interactions between crop and weed plants occurring after emergence of weedy plants in a crop stand. Attention is given to a fundamental understanding of processes governing crop-weed interactions as well as the utilization of this knowledge for improved weed management.

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Soil Seed Bank, Germination and Early Growth

The scope of the working group is: From weed seeds enter the soil to emerged seedlings (early growth) and from formation of vegetative reproductive organs to above ground shoots are formed.

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Herbicide Tolerant Varieties

This WG is not active any more, it has been merged together with the WG 'Optimizing Herbicide Use in an IWM context' into the WG 'Sustainable Use of Herbicides'

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Invasive Alien Plants

Invasive Alien Plants are creating new problems worldwide as new weeds in managed and unmanaged areas as well as being among main causes of biodiversity loss. Alongside global change, new introduction of alien species are inevitable and will be bigger problem if required measures cannot be taken. In addition introductions and impacts have increased combined affect with other drivers such as climate change and disturbing habitats so on.

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Sustainable Use of Herbicides

The objective of the WG is to promote research and exchange of information on the optimum use of herbicides in Integrated Weed Management programmes.

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Parasitic Weeds

This WG is not active any more, it has been merged with the WG 'Crop-weed interactions'

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Physical and Cultural Weed Control

The objective of the WG is to promote international collaboration and support of research and information exchange on physical and cultural weed control. Physical and cultural weed control comprises cultural methods (e.g. crop rotation, soil tillage, mulches) and physical techniques (e.g.mechanical weed control, thermal weed control, electroweeding). Physical and cultural weed control methods are important aspects for the development of Integrated Weed Management systems with a reduced herbicide dependence. This WG addresses the development of single tactics and tools, and focusses on the combined use of these techniques in IWM approaches for sustainable agriculture in Europe. The WG organizes biannual meetings and excursions.

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Precision Agriculture

Precision Agriculture is based on the fact that weed populations are commonly irregularly distributed within crop fields and it implies applying chemical and/or physical weed control measures only where and when they are really needed.

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Weed Vegetation and Biodiversity

We are a group of weed scientists, agroecologists, botanists and specialists from others disciplines, who are interested in weeds from a conservation perspective, in the composition of the arable floral in response to management tools, in ecosystem services provided by weeds, and in the role of weeds in supporting food webs and the implications this has for the control of weed communities.

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Weed Management in Mediterranean Cropping Systems

Recent climate change generated an agronomical shift towards more irrigated cropping systems in arid and semi-arid regions, leading towards shifts in weed species and biodiversity changes. As a working group, our mission is to share and promote collaborative research in order to create sustainable weed management in the arid and semi-arid countries of Europe under the projected climate change. We want to create new and improved weed management options suitable to the regional changes.

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Weed Management Systems in Vegetables

This WG is not active any more.

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European Weed Mapping

This WG is not active any more, it has been merged with Weeds and Biodiversity into the new WG 'Weed vegetation and biodiversity'

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Herbicide Resistance

We will facilitate the effective management of herbicide resistance by fostering understanding, co-operation and communication between industry, government, academic and farmers.

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Education and training

The WG Education and Training aims to increase interaction and knowledge dissemination between the different members of the EWRS. By providing training courses and workshops in different fields of weed science, the WG aims to cover a broad range of topics ranging from theoretical courses to practical trainings in the field. This offered activities focus on participants from weed science as well as crop science, plant science and ecology.

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